<?php

namespace app\service;

use OSS\OssClient;
use OSS\Core\OssException;

class OssService
{
    private $accessKeyId;
    private $accessKeySecret;
    private $bucket;
    private $endpoint;
    private $ossClient;

    public function __construct()
    {
        try {
            $this->accessKeyId = env('OSS_ACCESS_KEY_ID');
            $this->accessKeySecret = env('OSS_ACCESS_KEY_SECRET');
            $this->bucket = env('OSS_BUCKET', 'vehicle-album');
            $this->endpoint = env('OSS_ENDPOINT', 'https://oss-cn-beijing.aliyuncs.com');
            
            // 记录配置信息
            error_log("OSS Configuration:");
            error_log("AccessKeyId: " . substr($this->accessKeyId, 0, 4) . "****");
            error_log("Bucket: " . $this->bucket);
            error_log("Endpoint: " . $this->endpoint);
            
            $this->ossClient = new OssClient($this->accessKeyId, $this->accessKeySecret, $this->endpoint);
            
            // 测试连接
            $this->ossClient->doesBucketExist($this->bucket);
        } catch (OssException $e) {
            error_log("OSS Client Initialization Error: " . $e->getMessage());
            throw new \RuntimeException('OSS Client Initialization Error: ' . $e->getMessage());
        }
    }

    /**
     * 上传图片到 OSS
     * @param string $filePath 本地文件路径
     * @param string $objectKey OSS上存储的对象名称
     * @return string 图片的 URL
     */
    public function uploadImage($filePath, $objectKey)
    {
        try {
            // 上传文件到 OSS
            $this->ossClient->uploadFile($this->bucket, $objectKey, $filePath);
            // 构造图片的私有 URL
            $url = $this->generatePrivateUrl($objectKey);
            return $url;
        } catch (OssException $e) {
            // 错误处理
            throw new \RuntimeException('OSS Error: ' . $e->getMessage());
        }
    }

    /**
     * 生成图片的私有访问 URL
     * @param string $objectKey
     * @return string
     */
    public function generatePrivateUrl($objectKey, $expireTime = 3600)
    {
        try {
            // 生成 OSS 私有 URL（有效期为 3600 秒）
            $url = $this->ossClient->signUrl($this->bucket, $objectKey, $expireTime);
            // 记录调试信息
            error_log("OSS URL Generation Debug:");
            error_log("Bucket: " . $this->bucket);
            error_log("ObjectKey: " . $objectKey);
            error_log("ExpireTime: " . $expireTime);
            error_log("Generated URL: " . $url);
            return $url;
        } catch (OssException $e) {
            error_log("OSS Error: " . $e->getMessage());
            throw new \RuntimeException('OSS Error: ' . $e->getMessage());
        }
    }
}